Stop and waste valve



o. P. BENJAMIN STOP m v'msn VALVE Filed 1m; 23. 1922 II In: F

Patented 16, 1924.

UNITED I STATES PATENT orrlcs.

OSCAR P. BRITAIN, OI DETROIT, MICHIGAN, ABBIGNOBN CAPITOL BBLBI'WO OIDI'I'BOIT, IIOHIGAN', A CORPORATION OI IIGHIGLI.

v 7 area arm wasrn vaavn Application fled December as, me. serial Io.0003a.

communicating withthe valve. I am aware of globe valves having needlevalves and the like for relievin excessive'pressure, and from amanufacturing experience that such needle valve construction increasesthe cost of production and is not satisfactory in many particulars. Forinstance, the valve seats for needles cannot be readily cleaned and theneedles,'per se, beoomez'defective because of the accumulation offoreignmatter and incrustations, and very often manufacturing imperfectionsinterfere with proper seating of a needle valve and closing of therelief port of a globe valve.

My invention aims to provide a globe valve with a relief valve havin anexterior valve seat, which can be easily manufactured, cleaned, andmaintained in an operative .condition. The valve also seats exteriorlyof the globe valve and provision is made to preventacoidentaldisplacement of the relief valve. At times su valves aresurreptitiously removed or a justed to the extent of becoming disengagedfrom the globe valve body, and this displacement I prevent by anchoringthe valve so that it cannot become easily displaced, yet permit ofremoval when occasion requires. From a manufacturing standpoint thereare other improvements over the present type of relief valves.

The construction entering into my invention will be hereinafterspecifically described and then claimed and reference will now be had tothe. drawing wherein.-

Figure 1 is a side'elevation of a stop and waste valve, partly brokenaway and partly in section to show the auxiliary valve;

Fig. 2 is anenlarg'ed detail sectional view of the valve in anopenposition, and

Bisafurtherentofaportionofthevalveinaclossdpontion.

, of said In the drawing, the reference numeral 1 denotes a globevalvehody having a bonnet 3 for an adjustable the body 1 may be i body1' through a small port ,7 and the wallsbore are screwthreaded. At theouter end ofthe'bore the enlargement or b0& 5 is provided with anannular groove 8 concentric. of the -bore so as to rovide" anoutstanding annular malleable wa or flange 9 having a cross sectionalconfiguration affording an annular valve seat 10 ,set in or countersunkrelative to the face of the enlargement. or how 5.

e reference numeral 11 denotes a valve stemhavmg its inner end providedwith an exteriorly screwthreaded head 12 in screwthreaded engagementwith the walls of the bore 6 so that the stem may be adjustedlongitudinally of the bore. On the outer. end of the stem 11 is aknurled head 13 pro vided with a slot 14 to permit-ofa screw driver orother instrument being used for adjusting the valve stem. On the stem11, against the inner face of the head 13, is a gasket or valve 15corresponding in dimeter to the groove 8 so that it may be forced intosaid groove and on to the seal 10 of the wall or flange 9, as shown inFig. is to positively close the outer end of the re In the valve stem-11 is a longitudinal passage 16 having its inner end 0 at the head 12to communicate with the re .8, and the outer end of the p communicateswith a lateral port 17 in lateral port is ada ted to communicate withthe atmosphere w en the valve stem 11 is in 'a valve open position, asshown in Fig. 2, otherwise the ateral Eort17 is shut oil from theatmosphere w en the gasket 15 is on the flange or wall 9, as shown in g.

To prevent the valve stem 11 from being screwed entirely out of the bore6 and thm may be convenientthe stem 11, which becoming displaced, theflange or wall Dis 1 and ifornr an V'abutment which will preventaccidental IOD'IOVtIl-Of the" valve stem, after it 15 once mounted inthe bore. The restriction of the bore may be noted in "3 and really ingor bending the flange or wall inwardly does not interfere wlth the valveseat 10 or forclble removal of the valve stem. As a n atterof fact, itbringsthe seat closerto the i stem and allows more room in the groove 816 for any crowding of the gasket 15 therein as the'valve isclosed. V VA,

From the foregoing it will be noted that the va'lve'st'e'm 11e'ffectsclosure of the bore '6 atthe outer-end thereof incontradistinction' to a needle valveoperating at the inner end'of thebore, and it isiapparent that a bettor seating action and positiveclosing. of. the valve can be accompllshed when accless may be easilyhad to the valve seat and the. gasket which sea-ts thereon. Thereispractically a double seal for the valve when] .closed be- 7 cause thegasket not only seats on the flange or wall 9, butis crowded into andcompressed in the groove 8. .So far no leakage has ever convenientlylocated on top of the valve body where easy access may behad to saidvalve.

' Oneembodiment of my invention has been venting, the removal of saidvalve body,

illustrated, but it islo bahnderstood'that the structural elements aresusceptible to such change and modifications iasj fall within the scopeof the appended claims. What I claim is J '1. The combination' of"a'globe valve having an enlargement, a relief valve having a stemadjustable in the enlargement of said globe valve, and means retainingsaid relief valve stem in the enlargement of said globe valve andafiording an exterior seat for said relief valve. I i 7,

2. The combination set forthin claim 1,

'whereinsaidl means is in the form of an-rannular peened 1n flange.

3..Tlie combinationv set forth in claim 1,

the valve for engagingsaid seat comprising ahead on said relief valvestem, and the stem having a head in screw threadedengagement,

with the globe'valve enlargement.

4 In a device of the class described, the combination o f'a globe valvebody, a threaded relief valve thereon, said valve having a head, andmeans formlng a seat fon-said head, said means also-forminga'stoprforpreom sand In testimony I v signature vin presence of twowitne C d and I find that the valve can be 7 V 7 osoARr. B J MIN;Witnessesi T i i W-IILDEN! 01120 F. Ban'rmin,

